diff -ruN a/scripts/autoload/net.gd b/scripts/autoload/net.gd
--- a/scripts/autoload/net.gd
+++ b/scripts/autoload/net.gd
@@ -79,9 +79,8 @@
 
 
 func _ready() -> void:
-	# The host's RSA key takes a second or more of CPU: make it in the background at boot,
-	# so hosting never waits for it.
-	NetPeer.prepare_host_key()
+	# fredygames: no online play on this site, so no host key is made at boot (it needs a thread).
+	pass
 
 
 func _exit_tree() -> void:
diff -ruN a/scripts/ui/main_menu.gd b/scripts/ui/main_menu.gd
--- a/scripts/ui/main_menu.gd
+++ b/scripts/ui/main_menu.gd
@@ -51,13 +51,6 @@
 	demo_button.text = "Demo"
 	training_button.add_sibling(demo_button)
 	demo_button.pressed.connect(func() -> void: GameState.start_demo(get_tree()))
-	# Online sits under Versus; built from it so it shares the menu's look.
-	var online_button := versus_button.duplicate(0) as Button # 0: without Versus's signal connections
-	online_button.name = "OnlineButton"
-	online_button.unique_name_in_owner = false
-	online_button.text = "Online"
-	versus_button.add_sibling(online_button)
-	online_button.pressed.connect(func() -> void: get_tree().change_scene_to_file(ONLINE_SCENE))
 	if Net.peer:
 		Net.leave() # back at the main menu: any online session is over
 	if Net.lobby:
diff -ruN a/scripts/ui/server_lobby.gd b/scripts/ui/server_lobby.gd
--- a/scripts/ui/server_lobby.gd
+++ b/scripts/ui/server_lobby.gd
@@ -18,8 +18,8 @@
 const REFRESH_MS := 3000
 ## Below this many players the lobby shows "under 5 online" instead of exact counts.
 const FEW_ONLINE := 5
-const DEFAULT_SERVER := "wss://104-248-147-130.sslip.io/v1/ws"
-const SERVER_LIST_URL := "https://raw.githubusercontent.com/clintcan/3d-fighter/main/online/servers.json"
+const DEFAULT_SERVER := "" # fredygames: online play removed
+const SERVER_LIST_URL := "" # fredygames: online play removed
 
 var _name_edit: LineEdit
 var _url_edit: LineEdit